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authorJean-Michel Trivi <jmtrivi@google.com>2013-08-28 17:54:51 -0700
committerJean-Michel Trivi <jmtrivi@google.com>2013-08-28 18:06:47 -0700
commit7ad97579f8ccb843afdb5b184c4b209253839fe3 (patch)
treee5777dc9d28b9038052ea4035ae9a072e1b852e0 /libAACenc/src/qc_main.cpp
parent206a397c708738c08edc0229881018edcb8ea793 (diff)
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AAC Encoder low delay quality
* AAC-Encoder - Revise bit distribution for lowdelay configuration to improve encoder audio quality. - Adjust lowdelay bitreservoir for low bitreservoir configuration. Modified file(s): libAACenc\src\aacEnc_ram.cpp libAACenc\src\aacenc.cpp libAACenc\src\aacenc_lib.cpp libAACenc\src\aacenc_tns.cpp libAACenc\src\adj_thr.cpp libAACenc\src\adj_thr.h libAACenc\src\block_switch.cpp libAACenc\src\block_switch.h libAACenc\src\interface.h libAACenc\src\psy_main.cpp libAACenc\src\qc_data.h libAACenc\src\qc_main.cpp * FDK-Library - Increase the accuracy in CalcInvLdData() calculation which improves the encoder audio quality. Modified file(s): libFDK\src\fixpoint_math.cpp Bug 9428126 Change-Id: I302d7f4c3aeccf79e1b85f20e18a31e6e2b10544
Diffstat (limited to 'libAACenc/src/qc_main.cpp')
-rw-r--r--libAACenc/src/qc_main.cpp22
1 files changed, 14 insertions, 8 deletions
diff --git a/libAACenc/src/qc_main.cpp b/libAACenc/src/qc_main.cpp
index 0a4bcbc..15646e9 100644
--- a/libAACenc/src/qc_main.cpp
+++ b/libAACenc/src/qc_main.cpp
@@ -382,10 +382,10 @@ AAC_ENCODER_ERROR FDKaacEnc_QCInit(QC_STATE *hQC,
if ( isConstantBitrateMode(hQC->bitrateMode) ) {
INT bitresPerChannel = (hQC->bitResTotMax / init->channelMapping->nChannelsEff);
/* 0: full bitreservoir, 1: reduced bitreservoir, 2: disabled bitreservoir */
- hQC->bitDistributenMode = (bitresPerChannel>50) ? 0 : (bitresPerChannel>0) ? 1 : 2;
+ hQC->bitDistributionMode = (bitresPerChannel>100) ? 0 : (bitresPerChannel>0) ? 1 : 2;
}
else {
- hQC->bitDistributenMode = 0; /* full bitreservoir */
+ hQC->bitDistributionMode = 0; /* full bitreservoir */
}
@@ -420,11 +420,17 @@ AAC_ENCODER_ERROR FDKaacEnc_QCInit(QC_STATE *hQC,
break;
}
- FDKaacEnc_AdjThrInit(hQC->hAdjThr,
- init->meanPe,
- hQC->elementBits, /* or channelBitrates, was: channelBitrate */
- init->channelMapping->nElements,
- hQC->vbrQualFactor);
+ FDKaacEnc_AdjThrInit(
+ hQC->hAdjThr,
+ init->meanPe,
+ hQC->elementBits, /* or channelBitrates, was: channelBitrate */
+ hQC->invQuant,
+ init->channelMapping->nElements,
+ init->channelMapping->nChannelsEff,
+ init->sampleRate, /* output sample rate */
+ init->advancedBitsToPe, /* if set, calc bits2PE factor depending on samplerate */
+ hQC->vbrQualFactor
+ );
return AAC_ENC_OK;
}
@@ -655,7 +661,7 @@ static AAC_ENCODER_ERROR FDKaacEnc_prepareBitDistribution(QC_STATE* h
hQC->elementBits[i]->bitResLevelEl,
hQC->elementBits[i]->maxBitResBitsEl,
hQC->maxBitFac,
- hQC->bitDistributenMode);
+ hQC->bitDistributionMode);
*totalAvailableBits += hQC->elementBits[i]->bitResLevelEl;
/* get total corrected granted PE */